The 2015 King of the Ring was a professional wrestling event produced by WWE. It was the 11th King of the Ring event and was held on Tuesday, April 28, 2015, at the iWireless Center in Moline, Illinois. Unlike previous King of the Ring events, which aired on traditional pay-per-view (PPV) from 1993 to 2002, the 2015 event was livestreamed exclusively on WWE's online service, the WWE Network, which made it the first King of the Ring event to air on the service, as well as the first dedicated King of the Ring event since 2002. The event featured the semifinals and finals of the 20th King of the Ring tournament, which was won by Bad News Barrett, who defeated Neville in the final and subsequently became known as King Barrett.

The Vibrant Arena at The MARK, formerly known as The MARK of the Quad Cities, the iWireless Center, and the TaxSlayer Center, is a 12,000-seat multi-purpose arena located in Moline, Illinois. The facility opened in May 1993, under the name The MARK of the Quad Cities with the singer Neil Diamond as the opening act. The facility was renamed as the TaxSlayer Center on October 1, 2017. The arena started using its current name on September 1, 2022.